Tank-type liquid-solid countercurrent continuous multistage extraction equipment

Abstract

The utility model provides tank type liquid-solid countercurrent continuous multistage extraction equipment which comprises a primary extraction tank, the bottom of the primary extraction tank is connected with a primary conveying and draining machine, and the primary extraction tank conveys extracted materials into a multistage extraction tank of a multistage extraction mechanism through the primary conveying and draining machine; the multi-stage extraction mechanism at least comprises more than two multi-stage extraction tanks, the bottom of each multi-stage extraction tank is connected with a multi-stage conveying and draining machine, and each multi-stage extraction tank conveys extracted materials to the next multi-stage extraction tank through the multi-stage conveying and draining machine. The continuous counter-current extraction device has the beneficial effects that multi-solvent grading continuous counter-current extraction can be realized, one-time feeding and discharging are realized, the extraction rate is high, feeding and discharging are easy, the labor intensity is low, the comprehensive cost is low, the benefit is high, and the continuous counter-current extraction device is suitable for mass production.

Description

Technical Field

[0001] The utility model belongs to the field of extraction and draining equipment, in particular to a tank-type liquid-solid countercurrent continuous multi-stage extraction equipment. Background Art

[0002] The general extraction process types can be divided into static intermittent type, dynamic intermittent type and dynamic continuous type. The dynamic type has a faster extraction speed than the static type, and the continuous type has a shorter operation time than the intermittent type, reduces the operation links, has a high utilization rate of equipment resources, and is conducive to the realization of extraction production automation; the existing tank group extraction process extraction method cannot achieve multi-tank continuous countercurrent extraction and multi-stage drainage in a single tank production.

[0003] The existing multi-stage tank group continuous extraction process has multiple feeding and slag discharge in the extraction method, which cannot achieve single-tank production or multi-tank continuous multi-stage countercurrent extraction, but cannot achieve multi-stage draining, resulting in unclear extraction gradient and low extraction efficiency. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model aims to provide a tank-type liquid-solid countercurrent continuous multi-stage extraction equipment to solve the problems raised in the above-mentioned background technology.

[0005] The utility model is realized by the following technical scheme: a tank-type liquid-solid countercurrent continuous multi-stage extraction equipment, comprising: a primary extraction tank, the bottom of which is connected to a primary conveying and draining machine, and the primary extraction tank transports the extracted materials to the multi-stage extraction tank of the multi-stage extraction mechanism through the primary conveying and draining machine;

[0006] The multi-stage extraction mechanism comprises at least two or more multi-stage extraction tanks, and the bottom of each multi-stage extraction tank is connected to a multi-stage conveying and draining machine, and each multi-stage extraction tank transports the extracted material to the next multi-stage extraction tank through the multi-stage conveying and draining machine;

[0007] The multi-stage solvent pump and its matching pipeline transport the extracting liquid overflowed during the multi-stage delivery and draining mechanical transportation to the previous multi-stage extraction tank.

[0008] As a preferred embodiment, the upper and lower surfaces of the primary conveying and draining machinery are respectively arranged with a primary overflow pipe and a primary drain pipe, the primary overflow pipe is connected to the primary solvent pump through a pipeline, the primary conveying and draining machinery is one of a hoist, a scraper, and a dragon, and the primary drain pipe is a drain section with a filter.

[0009] As a preferred embodiment, the upper and lower surfaces of the multi-stage conveying and draining machinery are respectively arranged with a multi-stage overflow pipe and a multi-stage draining pipe, the multi-stage overflow pipe is connected to a multi-stage solvent pump through a pipeline, the multi-stage conveying and draining machinery is one of an elevator, a scraper, and a dragon, and the multi-stage draining pipe is a draining section with a filter.

[0010] As a preferred embodiment, the tail of the primary conveying and draining machine conveys the extracted material to the multi-stage extraction tank through the primary conveying pipe, and the tail of the multi-stage extraction tank conveys the extracted material to the next multi-stage extraction tank through the multi-stage conveying pipe.

[0011] As a preferred embodiment, the primary extraction tank and the multi-stage extraction tank are an extraction device with a stirring device, which is used to meet the extraction requirement of sufficient contact between the solvent and the material. The primary extraction tank and the multi-stage extraction tank are provided with a heating and cooling mechanism to meet the extraction requirement of the process temperature. The primary extraction tank and the multi-stage extraction tank are provided with an overflow mechanism. The overflow mechanism of the primary extraction tank and the multi-stage extraction tank enters liquid from the bottom and discharges liquid from the top to maintain a constant liquid level. The primary extraction tank and the multi-stage extraction tank enter material from the top and discharge material from the bottom. The primary extraction tank and the multi-stage extraction tank enter solvent from the top and discharge solvent from the bottom through a primary conveying and draining device or a multi-stage conveying and draining device.

[0012] As a preferred embodiment, the primary solvent pump and the multi-stage solvent pump are a liquid delivery device, and the primary solvent pump and the multi-stage solvent pump are one of a centrifugal pump and a gear pump.

[0013] As a preferred embodiment, the multi-stage extraction tank at the tail of the multi-stage extraction mechanism transfers the extracted material to the solid-liquid separation equipment through a multi-stage conveying and draining machine.

[0014] As a preferred embodiment, the bottom of the solid-liquid separation device has a discharge port, and the solid-liquid separation device is one of a centrifuge and an extruder.

[0015] After adopting the above technical scheme, the beneficial effects of the utility model are: it can perform continuous countercurrent extraction with multiple solvents in grades, realize one-time feeding and discharging, have high extraction rate, easy feeding and discharging, low labor intensity, low comprehensive cost, high benefit, and is suitable for mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 The utility model is a schematic diagram of the overall structure of a tank-type liquid-solid countercurrent continuous multi-stage extraction equipment.

[0018] Figure 2 The utility model is a schematic diagram of the working route of the overflow pipe of the tank-type liquid-solid countercurrent continuous multi-stage extraction equipment.

[0019] Figure 3 The utility model is a schematic diagram of the working route of the drain pipe of the tank-type liquid-solid countercurrent continuous multi-stage extraction equipment.

[0020] In the figure, 100-primary extraction tank, 110-primary conveying and draining machine, 111-primary overflow pipe, 112-primary draining pipe, 113-primary conveying pipe;

[0021] 200-multi-stage extraction mechanism, 210-multi-stage extraction tank, 220-multi-stage conveying and draining machinery, 221-multi-stage overflow pipe, 222-multi-stage draining pipe, 223-multi-stage conveying pipe;

[0022] 300-solid-liquid separation equipment, 310-discharge port;

[0023] 400-primary solvent pump, 500-multi-stage solvent pump. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1 The utility model provides a technical solution: a tank-type liquid-solid countercurrent continuous multi-stage extraction device, comprising: a primary extraction tank 100, the bottom of which is connected to a primary conveying and draining machine 110, and the primary extraction tank 100 transports the extracted material to a multi-stage extraction tank 210 of a multi-stage extraction mechanism 200 through the primary conveying and draining machine 110;

[0026] The multi-stage extraction mechanism 200 comprises at least two or more multi-stage extraction tanks 210, and the bottom of each multi-stage extraction tank 210 is connected to a multi-stage conveying and draining machine 220, and each multi-stage extraction tank 210 transports the extracted material to the next multi-stage extraction tank 210 through the multi-stage conveying and draining machine 220;

[0027] The multi-stage solvent pump 500 and its matching pipeline transport the extracting liquid overflowed during the transportation of the multi-stage conveying and draining machine 220 to the previous multi-stage extraction tank 210 .

[0028] As an embodiment of the utility model: the upper and lower surfaces of the primary conveying and draining machinery 110 are respectively arranged with a primary overflow pipe 111 and a primary draining pipe 112, the primary overflow pipe 111 is connected to the primary solvent pump 400 through a pipeline, the primary conveying and draining machinery 110 is one of a hoist, a scraper, and a dragon, and the primary draining pipe 112 is a draining section with a filter.

[0029] The upper and lower surfaces of the multi-stage conveying and draining machine 220 are respectively arranged with a multi-stage overflow pipe 221 and a multi-stage draining pipe 222. The multi-stage overflow pipe 221 is connected to the multi-stage solvent pump 500 through a pipeline. The multi-stage conveying and draining machine 220 is one of an elevator, a scraper, and a dragon. The multi-stage draining pipe 222 is a draining section with a filter.

[0030] The tail of the primary conveying and draining machine 110 conveys the extracted material to the multi-stage extraction tank 210 through the primary conveying pipe 113 , and the tail of the multi-stage extraction tank 210 conveys the extracted material to the next multi-stage extraction tank 210 through the multi-stage conveying pipe 223 .

[0031] As an embodiment of the present invention, the primary extraction tank 100 and the multi-stage extraction tank 210 are extraction devices with a stirring device, which are used to meet the extraction requirement of sufficient contact between the solvent and the material.

[0032] The primary extraction tank 100 and the multi-stage extraction tank 210 are provided with heating and cooling mechanisms to meet the extraction requirements of the process temperature. The primary extraction tank 100 and the multi-stage extraction tank 210 are provided with overflow mechanisms. The overflow mechanisms of the primary extraction tank 100 and the multi-stage extraction tank 210 enter liquid from the bottom and discharge liquid from the top to maintain a constant liquid level.

[0033] The primary extraction tank 100 and the multi-stage extraction tank 210 have materials entering from the upper part and materials exiting from the lower part. The primary extraction tank 100 and the multi-stage extraction tank 210 have solvent entering from the upper part and solvent exiting from the lower part through the primary conveying and draining device or the multi-stage conveying and draining device.

[0034] The primary solvent pump 400 and the multi-stage solvent pump 500 are a liquid delivery device, and the primary solvent pump 400 and the multi-stage solvent pump 500 are one of a centrifugal pump and a gear pump.

[0035] The multi-stage extraction tank 210 at the tail of the multi-stage extraction mechanism 200 transmits the extracted material to the solid-liquid separation equipment 300 through a multi-stage conveying and draining machine 220 .

[0036] The solid-liquid separation device 300 has a discharge port 310 at the bottom. The solid-liquid separation device 300 is a centrifuge or an extruder.

[0037] See also Figures 2 to 3 As an embodiment of the present utility model, a multi-stage extraction mechanism 200 is taken as an example consisting of two multi-stage extraction tanks 210 and supporting equipment.

[0038] First, the material is conveyed to the primary extraction tank 100. At this time, the material is stirred by the stirring equipment in the primary extraction tank 100. The stirred material is transported by the primary conveying and draining machine 110. During transportation, if the overflowed extract meets the standard, it is extracted through the primary overflow pipe 111 driven by the primary solvent pump 400.

[0039] If the standard is not met, the material is transported to the first multi-stage extraction tank 210 by the primary conveying and draining machine 110. In the first multi-stage extraction tank 210, the material is stirred for the second time. Then, the extracted material is transported to the second multi-stage extraction tank 210 by the first multi-stage conveying machine. During the transportation, the overflowed extract is transported to the primary extraction tank 100 through the multi-stage overflow pipe 221 and the first multi-stage solvent pump 500. At the same time, the extract filtered through the multi-stage draining pipe 222 is also transported to the primary extraction tank 100 by the first multi-stage solvent pump 500 for multi-stage extraction.

[0040] When the material enters the second multi-stage extraction tank 210, fresh solvent is added to the second multi-stage extraction tank 210 for heating and stirring extraction. After extraction, the material is transported to the horizontal centrifuge through the second multi-stage conveying machinery, filtered in the horizontal centrifuge, and the filter residue is discharged through the discharge port 310.

[0041] When the material is transported to the horizontal centrifuge by the second multi-stage conveying machinery, the overflowed extract is transported to the first multi-stage extraction tank 210 through the multi-stage overflow pipe 221 and the second multi-stage solvent pump 500, and the extract filtered by the multi-stage drain pipe 222 is also transported to the first multi-stage extraction tank 210 through the second multi-stage solvent pump 500, and multi-stage extraction is performed, and the operation is performed in sequence and repeatedly extracted, which solves the problem that the tank group extractor cannot achieve multi-stage continuous countercurrent extraction and multi-stage draining, resulting in multiple feeding and discharging of the process, and cannot achieve multi-stage tank group continuous countercurrent extraction and draining, and the extraction efficiency is low. And the whole process system can be fed and discharged once.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A tank-type liquid-solid countercurrent continuous multi-stage extraction device, comprising: A primary extraction tank, characterized in that a primary conveying and draining machine is connected to the bottom of the primary extraction tank, and the primary extraction tank transports the extracted material to the multi-stage extraction tank of the multi-stage extraction mechanism through the primary conveying and draining machine; The multi-stage extraction mechanism comprises at least two or more multi-stage extraction tanks, and the bottom of each multi-stage extraction tank is connected to a multi-stage conveying and draining machine, and each multi-stage extraction tank transports the extracted material to the next multi-stage extraction tank through the multi-stage conveying and draining machine; The multi-stage solvent pump and its matching pipeline transport the extracting liquid overflowed during the multi-stage delivery and draining mechanical transportation to the previous multi-stage extraction tank.

2. A tank-type liquid-solid countercurrent continuous multi-stage extraction equipment as claimed in claim 1, characterized in that: The upper and lower surfaces of the primary conveying and draining machinery are respectively provided with a primary overflow pipe and a primary draining pipe, the primary overflow pipe is connected to the primary solvent pump through a pipeline, the primary conveying and draining machinery is one of a hoist, a scraper, and a dragon, and the primary draining pipe is a draining section with a filter.

3. A tank-type liquid-solid countercurrent continuous multi-stage extraction equipment as claimed in claim 2, characterized in that: The upper and lower surfaces of the multi-stage conveying and draining machinery are respectively arranged with a multi-stage overflow pipe and a multi-stage draining pipe, the multi-stage overflow pipe is connected to a multi-stage solvent pump through a pipeline, the multi-stage conveying and draining machinery is one of an elevator, a scraper, and a dragon, and the multi-stage draining pipe is a draining section with a filter.

4. A tank-type liquid-solid countercurrent continuous multi-stage extraction device as claimed in claim 3, characterized in that: The tail of the primary conveying and draining machine conveys the extracted material to the multi-stage extraction tank through the primary conveying pipe, and the tail of the multi-stage extraction tank conveys the extracted material to the next multi-stage extraction tank through the multi-stage conveying pipe.

5. The tank-type liquid-solid countercurrent continuous multi-stage extraction equipment according to claim 4, characterized in that: The primary extraction tank and the multi-stage extraction tank are extraction devices with stirring devices, which are used to meet the extraction requirement that the solvent fully contacts the material. The primary extraction tank and the multi-stage extraction tank are provided with heating and cooling mechanisms to meet the extraction requirement of the process temperature. The primary extraction tank and the multi-stage extraction tank are provided with overflow mechanisms. The overflow mechanisms of the primary extraction tank and the multi-stage extraction tank enter liquid from the bottom and discharge liquid from the top to keep the liquid level constant. The primary extraction tank and the multi-stage extraction tank enter material from the top and discharge material from the bottom. The primary extraction tank and the multi-stage extraction tank enter solvent from the top and discharge solvent from the bottom through a primary conveying and draining device or a multi-stage conveying and draining device.

6. The tank-type liquid-solid countercurrent continuous multi-stage extraction equipment according to claim 5, characterized in that: The primary solvent pump and the multi-stage solvent pump are a kind of liquid conveying equipment, and the primary solvent pump and the multi-stage solvent pump are one of a centrifugal pump and a gear pump.

7. The tank-type liquid-solid countercurrent continuous multi-stage extraction equipment according to claim 6, characterized in that: The multi-stage extraction tank at the tail of the multi-stage extraction mechanism transfers the extracted materials to the solid-liquid separation equipment through a multi-stage conveying and draining machinery.

8. The tank-type liquid-solid countercurrent continuous multi-stage extraction equipment according to claim 7, characterized in that: The bottom of the solid-liquid separation device is provided with a discharge port, and the solid-liquid separation device is one of a centrifuge and an extruder.

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